package com.ourhealth.security;

import com.alibaba.dubbo.config.annotation.Reference;
import com.ourhealth.pojo.Permission;
import com.ourhealth.pojo.Role;
import com.ourhealth.service.UserService;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

@Component("springSecurityUserService")
public class SpringSecurityUserService implements UserDetailsService {

        @Reference
        private UserService userService;

        //根据用户名查询用户信息
        @Override
        public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
            com.ourhealth.pojo.User user = userService.findUserByUsername(username);
            if (user == null){
                return null;
            }
            List<GrantedAuthority> list = new ArrayList<>();
            Set<Role> roles = user.getRoles();
            for (Role role : roles) {
                Set<Permission> permissions = role.getPermissions();
                for (Permission permission : permissions) {
                    list.add(new SimpleGrantedAuthority(permission.getKeyword()));
                }
            }

            UserDetails userDetails = new User(username,user.getPassword(),list);
            return userDetails;
        }

}
